JPH02112094U - - Google Patents
Info
- Publication number
- JPH02112094U JPH02112094U JP2091889U JP2091889U JPH02112094U JP H02112094 U JPH02112094 U JP H02112094U JP 2091889 U JP2091889 U JP 2091889U JP 2091889 U JP2091889 U JP 2091889U JP H02112094 U JPH02112094 U JP H02112094U
- Authority
- JP
- Japan
- Prior art keywords
- sound
- monitoring microphone
- earmuff
- speaker
- canceled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 3
- 230000030279 gene silencing Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2091889U JPH0633750Y2 (ja) | 1989-02-25 | 1989-02-25 | アクティブ・ノイズ・キャンセラー |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2091889U JPH0633750Y2 (ja) | 1989-02-25 | 1989-02-25 | アクティブ・ノイズ・キャンセラー |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02112094U true JPH02112094U (fr) | 1990-09-07 |
| JPH0633750Y2 JPH0633750Y2 (ja) | 1994-08-31 |
Family
ID=31237691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2091889U Expired - Lifetime JPH0633750Y2 (ja) | 1989-02-25 | 1989-02-25 | アクティブ・ノイズ・キャンセラー |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633750Y2 (fr) |
-
1989
- 1989-02-25 JP JP2091889U patent/JPH0633750Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633750Y2 (ja) | 1994-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2027340A1 (fr) | Ecouteur | |
| EP1398991A3 (fr) | Réduction du bruit acoustique | |
| JPH01196999A (ja) | ヘッドホン装置 | |
| JP2001069590A (ja) | ノイズ低減ヘッドセット | |
| JP3112268B2 (ja) | 騒音低減装置 | |
| JP2781193B2 (ja) | アクティブ・ノイズ・キャンセラー | |
| JPH11308685A (ja) | 能動型ノイズ低減ヘッドセット | |
| GB2361379A (en) | Noise reducing headsets | |
| JPH02112094U (fr) | ||
| JPH0392898U (fr) | ||
| JP3198509B2 (ja) | 再生装置 | |
| JP2786278B2 (ja) | アクティブ・ノイズ・キャンセラー | |
| JPH02112092U (fr) | ||
| EP0464220A4 (en) | Earphone device | |
| JPH0386694U (fr) | ||
| JPH0753119Y2 (ja) | アクティブ・ノイズ・キャンセラー | |
| JPH0275893U (fr) | ||
| JP2786285B2 (ja) | アクティブ・ノイズ・キャンセラー | |
| JPH02112093U (fr) | ||
| CN213072999U (zh) | 一种无线音响消除箱体驻波的声学结构 | |
| ATE71761T1 (de) | Laermverminderungsanordnungen. | |
| JPH0386691U (fr) | ||
| JPS6141320Y2 (fr) | ||
| JPH01202100A (ja) | 音響装置 | |
| JPH0386697U (fr) |